Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Current Liabilities (Details)

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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Accrued Expenses    
Accrued property and equipment purchases $ 30,474 $ 3,992
Accrued research and development costs 14,707 2,420
Accrued professional fees 11,097 1,386
Other accrued expenses 8,190 2,827
Total accrued expenses $ 64,468 $ 10,625